ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,495,809, issued on Dec. 16, was assigned to CHINA NATIONAL BAMBOO RESEARCH CENTER (Hangzhou, China).
"Liquid nitrogen quick-freezing preservation method for fresh bamboo shoots" was invented by Liangru Wu (Hangzhou, China), Jinlai Yang (Hangzhou, China) and Huimin Yang (Hangzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A liquid nitrogen quick-freezing preservation method for fresh bamboo shoots. The method includes performing a coating treatment on cuts of fresh bamboo shoots, which reduces the moisture loss through the cuts, slows down the degree of lignification of the bamboo shoots, mitigates color changes at the cuts, inhibits excessive...